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Standard User chris6273
(member) Sun 06-Feb-11 10:41:21
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Isn't my upstream attenuation a bit high?


[link to this post]
 
Hi guys, just a quick question which has sprang to mind...

Isn't my Upstream Attenuation a bit high for my Downstream Attenuation? See Below:

Down Up
SNR (dB):18.4 23.0
Attn(dB): 13.0 10.0

I know it doesn't matter at the moment as I'm on ADSL1 but I'm thinking for the future.

Same reading on a Home Hub v2 and my current DG834GT. Same reading also with the ADSLnation XF-1e.

Anyone know what may be causing this? I've seen people with an 18dB downstream attenuation reach 6-8dB upstream before.

-------------------------------------------------------------------
6851kbps Throughput:
My Broadband Speed Test

Downstream Upstream
Connection Speed 8128 kbps 448 kbps
Line Attenuation 13.0 db 10.0 db
Administrator MrSaffron
(staff) Sun 06-Feb-11 10:43:49
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Re: Isn't my upstream attenuation a bit high?


[re: chris6273] [link to this post]
 
Loads of spare margin so I would not worry about, people with 25dB attenuation on upstream still see 1Meg upstream speeds from ADSL2+

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User chris6273
(member) Sun 06-Feb-11 10:45:59
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Re: Isn't my upstream attenuation a bit high?


[re: MrSaffron] [link to this post]
 
I know smile

Is there anything which could be causing the higher attenuation though? I'm just interested in these sorts of things wink

-------------------------------------------------------------------
6851kbps Throughput:
My Broadband Speed Test

Downstream Upstream
Connection Speed 8128 kbps 448 kbps
Line Attenuation 13.0 db 10.0 db


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Administrator MrSaffron
(staff) Sun 06-Feb-11 10:48:38
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Re: Isn't my upstream attenuation a bit high?


[re: chris6273] [link to this post]
 
No suggests from me

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User yarwell
(sensei) Sun 06-Feb-11 12:46:54
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Re: Isn't my upstream attenuation a bit high?


[re: chris6273] [link to this post]
 
Upstream
Mgn Attn Pwr
24.0 20.0 12.4

downstream attenuation 35 dB
what upstream power are you showing ?

other line :-

Output Power (Up/Down) [dBm]: 12.5 / 19.5
Line Attenuation (Up/Down) [dB]: 15.5 / 30.0
SN Margin (Up/Down) [dB]: 9.0 / 12.0 (832k upstream)

Phil

MaxDSL - goes as fast as it can and doesn't read the line checker first.

MaxDSL diagnostics
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Standard User chris6273
(member) Sun 06-Feb-11 13:37:58
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Re: Isn't my upstream attenuation a bit high?


[re: yarwell] [link to this post]
 
Down Up
SNR (dB):18.3 22.0
Attn(dB): 13.0 10.0
Pwr(dBm):19.8 11.9

Looks like 11.9dBm.

-------------------------------------------------------------------
6851kbps Throughput:
My Broadband Speed Test

Downstream Upstream
Connection Speed 8128 kbps 448 kbps
Line Attenuation 13.0 db 10.0 db
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